Annual report pursuant to Section 13 and 15(d)

DEBT - Schedule of Debt (Details)

v3.21.1
DEBT - Schedule of Debt (Details) - USD ($)
$ in Thousands
Mar. 31, 2021
Feb. 28, 2021
Mar. 31, 2020
Debt Instrument [Line Items]      
Long-term debt $ 543,493   $ 561,124
Less short-term borrowings and current maturities of long-term debt (15,965)   (45,739)
Total long-term debt 527,528   515,385
Senior Notes | 6.875% Senior Notes      
Debt Instrument [Line Items]      
Long-term debt $ 391,550   0
Stated interest rate 6.875% 6.875%  
Secured Debt | Lombard Debt      
Debt Instrument [Line Items]      
Long-term debt $ 146,006   136,180
Secured Debt | Airnorth Debt      
Debt Instrument [Line Items]      
Long-term debt 5,631   7,618
Secured Debt | Humberside Debt      
Debt Instrument [Line Items]      
Long-term debt 306   335
Secured Debt | PK Air Debt      
Debt Instrument [Line Items]      
Long-term debt 0   207,326
Secured Debt | Macquarie Debt      
Debt Instrument [Line Items]      
Long-term debt 0   148,165
Term Loan      
Debt Instrument [Line Items]      
Long-term debt $ 0   $ 61,500